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Clavicular-shoulder muscle
Last reviewed: 04.07.2025
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The coracobrachialis muscle (m.coracobrachialis) begins at the apex of the coracoid process of the scapula, passes into a flat tendon that attaches to the humerus below the crest of the lesser tubercle at the level of attachment of the deltoid tendon. Some of the muscle bundles are woven into the medial intermuscular septum of the shoulder.
Function of the coracobrachialis muscle: flexes the shoulder at the shoulder joint and brings it toward the body. Participates in the external rotation of the shoulder (if the shoulder is pronated). If the shoulder is fixed, the muscle pulls the scapula forward and downward.
Innervation of the coracobrachialis muscle: musculocutaneous nerve (CV-CVIII).
Blood supply of the coracobrachialis muscle: anterior and posterior arteries surrounding the humerus.
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